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(N Model.) Y V E. NORTON 8u J. G. HODGSON.

SHEET METAL GAN.

N0.275,936. Patented Apr.17,183.

NITED STATES PATENT Enron.

-EDWIN NORTONAND JOHN G. HODGSON, OF CHICAGO, ILLINOIS, ASSIGNORS TO SAID- NORTON AND OLIVER W. NORTON, OF SAME PLACE.

sl-EET-METAL CAN.

SPECIFICATION forming part of Letters Patent No. 275,936, dated April 1'7, 1883.

Application filed March 5, 1883. (No model.)

To all whom 'it may concern Be it known that we, EDWIN NORTON and JOHN G. HODGSON, citizens of the VUnited States, residing in Chicago, in the county of 5 Cook and State of Illinois, have invented a new and useful Improvement in Sheet-Metal Cans, of which the followingis a specification. Our invention relates to improvements in cans the ends of which are secured thereon 1s by a double seam.

AHeretofore in securing ends or covers on cans by nie-ans of a double seam difculty has been experienced in making a tight joint at the point where the side seam in the body of .f5 the can is folded with the flange ofthe cover, owing to the greater thickness and stiffness at this point, and consequent difficulty of folding. This difficulty has heretofore been obviated by providing the can-body with a seamzo less ring, which is folded, with the can-cover, into a double seam, as shown in the Letters Patent to Edwin Norton, No. 255,012, dated March 14, 1882; but this method is of course open to the objection of the additional expense attendant upon the use of the seamless ring.

1n the present invention we have devised a means whereby the can-body having a soldered side seam may be folded with the cancover, so as te form a tight double seam or joint; and the invention consists. in providing the flange of the cover with a slight enlargement or lip at the point where it is folded over the side seam in the can-body. The canbody, at the side seam, is of course composed of two thicknesses of tin,which is additionally thickened and stiffened by the solder. At this point, therefore, when the can-body is folded with the flange of the can-cover, as

4o heretofore made, said flange is too short to form a tghtjoint, owing to the greater thickness and stiffness of the stock in the side seam of the can-body, and the consequent greater length of the separate bends or folds composing the seam and the edge of the flange ofthe cover during the operation of forming the seam often comes untucked at this point, rendering the joint defective. By increasing the the breadth of the flange at this point this 5o difficulty is obviated and a perfect joint is made.

In Figures 1 and 2 of the accompanying seam completed.

| drawings, which form a part of this specification, we have shown in section each of the two ways of applying the countersunk or flanged head to a cau-bod y for forming a double seam shown or described in the patent to Wilson, Green, and Wilson, No. 24,772, of July 1-2, 1859, reissued December 7, 1869, as No. 3,757, and provided with our improvement. Fig. 3 is a similar sectional view of the double Figs. 4. and 5 are respectively a plan and a side view ofthe cover adapted to be applied to can-bodies as shown in Figs. land 2, respectively.

In the drawings, A represents the cau-body, or a portion thereof. A is the side seam therein. B is the countersunk cover or head, provided with a flange, b. The flange b, at the point where itis folded with the side seam in the body of the can, is provided with an enlargement or lip, b', which adapts said flange to be properly folded with the can-body at this point, where it is composed of two thicknesses of tin soldered together. The sections l shown in Figs. l, 2, and 3 are taken through the side seam in the body of the can. The cover, with its flange b, provided with its enlargement b, may be applied directly to the can-body, as shown in Fig. 1, and then folded A8o into the seam shown in Fig. 3; or a flange, ce, may be laid olf on the body of the can, as shown in Fig. 2, and the cover then applied thereto, in which case the flange of the cover should be first folded into the form shown in Fig. 2.

1t will thus be seen a can cover or head provided with our improvement may be formed into a double seam just the same as the ordinary flange, and in either of the ways indi- 9o cated in the Wilson, Green, and Wilson patent before referred to.

We claiml y The can-body A, in combination with the head B, secured thereto by a double seam, 95 and provided with flange b, having enlargement b at the side seam in the body of the can, substantially as specied.

Chicago, February 28, 1883.

EDWIN NORTON. JOHN G. HODGSON.

Witnesses:

H. M. MUNDAT, T. Evnanir'r BROWN. 

